Which two requirements should you identify?

You plan to deploy a Microsoft Azure Remote App collection by using a custom template image. The image will contain Microsoft Office 365 apps. The image will be used to deploy a collection that will be accessed by 50 users.
You need to identify licensing requirements for the deployment.
Which two requirements should you identify? Each correct answer presents part of the solution.
A. An activated Office 365 ProPlus installation
B. Windows client access licenses (CALs) assigned to the users
C. Office 365 ProPlus licenses assigned to the users
D. Remote Desktop client access licenses (CALS) assigned to the users
E. Office 365 Enterprise E3 service plan